カフェインを併用したトランスクレニアル直流刺激は,健康な女性の実行機能を促進する
Weiqin Yuan1,2, Michael A Nitsche3,4,5, Tian Yue1,2
1Beijing Sport University, Key Laboratory of Sport Training of General Administration of Sport of China, Beijing, China.
Journal of the International Society of Sports Nutrition
|September 1, 2025
まとめ
トランスクレニアル直流刺激 (tDCS) とカフェインを組み合わせると 実行機能が向上します この組み合わせは,単独の介入と比較して,より持続的な認知機能の改善をもたらしました.
科学分野:
- 神経科学
- 認知心理学
背景:
- トランスクラニアル直流刺激 (tDCS) とカフェインは,似たような神経生物学的なメカニズムを通じて認知能力を高めることが知られています.
- 以前の研究では,tDCSとカフェインが 認知機能に独立して作用することを示唆しています.
研究 の 目的:
- tDCSとカフェインを併用することで 実行機能に及ぼす急性効果を調査する
- 単独の介入とプラセボの効果を比較する.
主な方法:
- 80人の女性参加者は4つのグループに分けられた. tDCS + カフェイン,tDCS + プラセボ,偽のtDCS + カフェイン,偽のtDCS + プラセボ.
- 認知能力は,カフェインまたはプラセボの摂取後に2 mAの実際のまたは偽のtDCSの20分間の投与前に,Stroop,3-back,およびMore-Odd Shiftingタスクを使用して評価されました.
主要な成果:
- tDCS + カフェイン群は,介入後の2つの時間点 (T1とT2) において,3つのバックタスクの精度において有意な改善を示しました.
- tDCS + カフェイングループでは,T1でのStroopタスクの精度が向上した.
- どのグループでも More-Odd Shift タスクの有意な効果は見つかりませんでした.
結論:
- tDCSとカフェインの両方の介入は個別に認知機能の改善をします
- tDCSとカフェインの組み合わせは,tDCSまたはカフェイン単独投与と比較して,実行機能の持続的な改善をもたらします.
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